APA (7th ed.) Citation

Heck, J. G. (1972). Encyclopedia of source illustrations: A portable picture library of 5000 steel engravings. Morgan & Morgan.

Chicago Style (17th ed.) Citation

Heck, Johann Georg. Encyclopedia of Source Illustrations: A Portable Picture Library of 5000 Steel Engravings. Hastings-on-Hudson, N.Y.: Morgan & Morgan, 1972.

MLA (9th ed.) Citation

Heck, Johann Georg. Encyclopedia of Source Illustrations: A Portable Picture Library of 5000 Steel Engravings. Morgan & Morgan, 1972.